"I immediately started to bleed and proceeded to fall in and out of consciousness."

Hollie says ... in the midst of the chaos, she was transported to a local hospital by herself where she received 16 stitches to close up the bloody gash. She also received a tetanus shot.

Hollie was released from the hospital early this morning ... and has since filed a police report ... but tells us, "I had to take the subway home with no money or jacket. Nobody would even sit beside me. My friends were so scared because they did not know where I was."